Nail-set.



H. C. DUCKWORTH,

NAIL SET.

APPLICATION FILED AUG- 9. I916.

Patented Nov. 13, 1917.

ATTORNEY UNITED STATES PATENT OFFICE. Y

HANSFQBD G. DUGQKWOB'IH, 0F GASSAWAY, WEST VIRGINIA.

NAB-SET.

To all whom it mag concern:

Be it known that I, HANSFORD C. Doon- WORTH, a citizen of the United States, residing at Gassaway, in the county of Braxton and State of West Virginia, have invented certain new and useful Improvements in Nail-Sets, of which the following is. a specification.

This invention relates to nail sets and more particularly for driving and setting nails.

The primary ob'ect of the invention is to provide a device particularly adapted for use in driving and fastening. nails which hold plate glass windows, orany other'similar plates, where it is necessary to carefully direct the course of the nail when inserting it in place.

The invention further aims to provide a device for driving nails 'which will be adapted after the nail has been driven, to set the head of. the nail below the surface into which it is driven.

As a further object of the invention, the de ice is provided with a plunger having its operating end normally extended into the hanole of the device for a distance sufficient to accommodate the insertion of the shank also adapted to be automatically held in slightly extended position beyond the end of the handle of the device, so that the nail may be set after being driven.

A further object of this invention is the provision of a nail setting device which consists ,of comparatively few parts and is simple in construction, but durable and well adapted to withstand the rough usage to which devices of this character are ordinarily subjected.

For a full description of the invention and the advantages and merits'thereof, reference is to be had to the following description and the accompanying drawings, wherein is illustrated the preferred form of my invention, in which: 1 Figure 1 is a side elevation showing a nail held in place "before being driven.

Fig. 2 is a front elevation, and Fig. 3 is a. vertical longitudinal section showing the plunger in position for setting a nail.

Specification of Letters Patent.

to an. improved device Patented Nov. 13, 1917. I Application filed August 9, 1916. Serial No. 118,989. I

The casing 1 is of substantially a cylin-g drical formation and has its lower end tapered to provide the, restricted end 2. The casing is provided with-an interior bore 3 which extends concentrically through the casing and communicates with the restricted 4 I passage or central bore 4, the end of which opens at the restricted end 2 of the casing. The upper end of the casing is provided with a longitudinally extending slot 5 which communicates with the enlarged bore 3.

nail is being driven. The lower end of the plunger is reduced to provide the striking rod 7, and this rod slldably fits within the restricted bore 4. It will be observedthat I the two central bores 3 and 4, one being larger than the other, provide a shoulder 8 and this shoulder receives one end :of a coil extension spring 9, the opposite end of which bears againstthe' enlarged end 6 of the plunger.

As shown by Figs. 1 and 2 of the drawing, the coil spring tends to normally hold;the plunger in raised position, thereby disposing the operating end of the. striking rod at a point Within the bore 4: whereby the in sertion of a nail in the bore 4 may be provided for. For holding the nail in proper position, I provide a finger spring 10, the lower end of which is curved inwardly to provide the clasp 11 which extends through an opening 12 in the lower end of the easing, so that the clasp may resiliently engage the shank of the nail A. The finger spring 10 is provided with a longitudinal slot 13 through which a fastening element 14 is projected and has its end embedded in the casing 1. The longitudinal slot 13 permits the finger spring 10 to be vertically adjusted for accommodating the various lengths of vided with a locking stud 15 which extends laterally through thelongitudinal slot 5 has its end slightly projected beyond the outside of the casing 1. The spring finger 10 is projected upwardly beyond the fastening element let to provide the clip 16 and the clip is provided with a slot or aperture 17.

As shown by Fig. 3 of the drawing, the parts are in position whereby the nail may be set after being inserted in place. The locking stud 15 has, by virtue of the downwardly extended position of the plunger, been locked in the slot 17, thereby holding the extreme lower end of the plunger outwardly beyond the end of the casing 1 for a distance suflicient to permit the head of the nail to be driven below the surface into which it is embedded.

In operating the device, a nail will be placed within the restricted bore 4 having its head in engagement with the lower end of the striking rod 7 as shown by Figs. 1 and 2 of the drawing. The point of the nail will then be placed over the point at which it is to be inserted and by striking the upper end of the plunger 6, the nail will be driven into the material into which it is to be inserted and the plunger will, at each blow of the hammer, be extended further downwardly until. the locking stud 15 is automatically engaged in the slot 17. The end of the plunger will thereby be held in position whereby the nail may be set after being driven.

While the form of the invention herein shown and described is what is believed to be the preferred embodiment thereof, it is to be understood that minor changes may be made without departing from the spirit and scope of the invention as claimed.

What is claimed as new is 1."In a nail set, the combination with a means for holding a nail to be driven, of means for driving the nail, and locking means for holding the driving means in position for setting the nail.

2. In a nail set, the combination with means for holding the shank of a nail to be driven, of driving means mounted for intermittently engaging the head of the nail, and locking means associated with the driving means and arranged to automatically lock said driving means in position for setting the nail after being driven.

3. In a nail set, the combination with a casing having a central longitudinal bore, of a driving element mounted within the bore of the casing means for holding a nail within one end 0% the casing, a coil spring disposed within the casing and surrounding the driving element, and means connected to the driving element and associated with the said holding means for retaining the said spring under tension by the driving:

element after the said element has been projected beyond the end of the casing.

l. A nail set includ ng a casing having a central bore, a striking rod mounted within the bore of the casing, one end of the casing l having an aperture formed therein, holding means carried by the casing and arranged to project through the aperture for engagement with the striking rod, the said casing also having a longitudinal slot, the said holding means including an extension provided at its terminal with a slot, and a locking element carried by the striking rod and projecting through the said slot in the casing, and engageable with the slot in the said extension when the end of the striking rod is extended from the end of the casing.

5. In a nail set, the combination with a casing, of a driving element, striking means carried by the driving element, a spring finger carried by nail in position to be drlven, associated with said sprin finger and cooperating with said driving element for locking the driving element in osition for setting a nail after the nail has een driven.

6. A nail set including a casing, driving means slidably mounted in the casing including a striking rod arranged to have one end norm-all disposed in such position as to be in spaced relation to the 'end of the easing, and means carried by the casing and cooperating with the driving means for locking the driving means after the striking rod has been extended beyond the end of the casing.

7. A nail set including a casing having a striking rod slidably mounted within the casing, a coil spring arranged within the casing and engageable with the striking rod for normally holding the end of the striking rod within the casing and means including an element carried by the casing for automatically locking the striking rod against the tension of the said spring when the end of the striking rod is projected beyond the end of the said casing.

8. A nail set including a casing having a central bore formed therein, a striking rod slidably mounted in the bore, the said rod having a shoulder intermediate its ends, an expansion spring within. the casing having one end engageable with the said shoulder for holding the striking end of the striking rod normally within the casing, and means including an element carried on the exterior of the casing for retaining the striking rod in extended position against the action of the said spring, the said means including a pin projecting from the said striking red.

9. A nail set including acasing having one end reduced, the said casing being of cylindrical formation and provided with a central bore, a striking rod mounted within the bore of the casing, a spring finger mounted on the exterior of the casing and having one end bent inwardly to provide a and means the casing for holding the v clasp, the said reduced end of the casing being provided with an aperture for receiving the said clasp,.a fastening element for said spring finger, an extension formed on the spring finger at the opposite end of the finger and provided with an opening, and a locking element carried by the striking rod and adapted to automatically engage in the opening in said extension for holding the end of the striking rod extended from 10 the casing.

In testimony whereof I aflix my signature in presence of two Witnesses.

HANSFORD G. DUGKWORTH.

Witnesses S. H. GIBSON, J B. Fxsm. 

